Industrial Sewage Treatment



Industrial sewage is defined as sewage transmitted from various production processes. The composition and volume of the sewage varies by industry and process.
Industrial sewage in general are hazardous to the piping in the transport and purification systems. In order to reduce this hazard to a compliant (with regulation) level the sewage must be treated at the source (the production plant). Untreated sewage may cause epidemic events, and is an environmental and health hazard.
The purpose of treating industrial sewage is the regulation of the interface between the industrial production process, the sewage quality at the connection point with the sewage system, avoiding damage to the sewage transmission piping, avoiding damage or interruption to the biological processes at the purification plant and enabling agricultural re-use of effluents. In addition preventing environmental hazards and nuisances as an industrial pollution source.

Pollution composition / oils and fats

On of the main ingredients in sewage are oils and fats, which are characterized by low solubility in water and tend to solidify on the piping walls of sewage systems, control ditches and pumping wells.  As a result, the inner diameter of the piping diminishes up to virtually being blocked.
In some cases the oils and fats solidify into balls that float in the sewage, and might, with other solids in the sewage, cause the blockage of the intake entrance at the sewage purification plant pumps.
A high concentration of oils and fats in the sewage might interfere with the biological processes of the treated sludge in the purification plants by coating the micro-organisms and interfering with the transfer of oxygen from the liquid phase to the biological flocks, thereby causing suffocation.




Standard mg/L

according to regulation under thr industrial sewage transmission law 1981 and the water Act



Oil and fats Max


Mineral Oil


B.O.D Gerenal

2000 C.O.D General
6-10 pH
1000 Floating Solids 105o C





  Settling Solids in ml.


one minute

Ten minutes

Therty minutes

430 Chlorides




















Sludge is *solid organic matter created as an integral part of the sewage purification process. The sludge source is the solids settling in the sewage treatment basins and the micro-organisms which broke-down the organic matter in he sewage. Sludge may be used after appropriate treatment as an agricultural fertilizer. A part of the sludge forming as sediment is circulated back to the oxidation basins.





Markit's solution for treatment of fatty sewage

Bio-Modular/ A Modular Bio-Reactor

Markit has developed a fully automated device for the aerobic treatment of fatty sewage and heavy metals. After treatment the sewage is standard compliant and may be transmitted to the sewage system.
The system is self-feeding and works 24/7.


The system is intended for:


•     Workshops

•     Auto workshops and garages, metalworking plants,
•     wineries, restaurants
•     and industrial plants

Unique characteristics of the device

•  Simple structure and easy operation
•  Easy maintenance
•  Economical
•  Does not create foul odor.
•Combines special micro-organisms specifically suitable for the break-down of fats and for the prevention of odors at a low cost

* In addition high BOD sewage may be treated in order to prevent and treat odors such as garbage collection lines, pumps, traps and drainage pipes by immediately reducing odors caused by H2S and fatty acids

The process includes:

•       Solids separation
•       Early fats separation
•       PH correction
•       Transmission of sewage to the treatment facility at a controlled rate.
•       A continuous 6 days bacterial treatment, temperature and ventilation controlled.
•       Integral filtration
•        Sewage transmission to the sewage system and the removed oils and fats to the collection tank.

Device / System Size:

Modular, adjustable daily volume. For the treatment of heavy and problematic sewage.

System Structure:

- A continuous modular system of six (6) cells,
- one cell for each treatment day.
- reception of sewage from the supply tank after correction of PH